The site you want is blocked from your connection. Should it be? Content filtering technologies can generate a lot of false positives.
Enter the URL or domain into the big text box at the top of the page, click "Check this URL/domain" and in a few seconds you'll get a risk assessment from 3 trusted sources; Web of Trust, McAfee, and Google.
This report is a great first step in evaluating the risk posed by visiting a given URL or domain. With this report, you and your IT Security team should be able to fine tune your content filter quickly and reliably.